VEHICLE INCLUDES AN EASILY ACCESSIBLE UNDER-BEDS FUSE BOX

Abstract

The invention relates to a motor vehicle comprising a floor (3), a battery (2) arranged under the floor, a rear crossmember delimiting the battery pack, and a fuse box (1) mounted on the rear crossmember. The fuse box comprises a box body (14) and a cover (15) together delimiting an internal volume containing fuses, with a parting line (PJ) at which the cover abuts the box body. The parting line has a normal direction (W0) perpendicular to said parting line. The cover and the fuses are screwed in place by means of screws having respective screw axes, the normal direction (W0) being oriented downwards, at an angle (θ0) with the downward vertical of between 30 degrees and 70 degrees. A free space for maintenance access is provided opposite the cover. Abstract figure: Fig. 3

Description

Title of the invention: VEHICLE COMPRISING AN EASILY ACCESSIBLE UNDER-BODY FUSE BOX

[0001] The invention relates to a vehicle, in particular an electric or hybrid vehicle, comprising a fuse box. The vehicle may be a 100% electric vehicle (i.e., without an internal combustion engine) or a hybrid vehicle, for example, a plug-in hybrid vehicle.

[0002] This type of vehicle is fitted with an electrical energy storage battery, more concisely called an 'electric battery' or even simply a 'battery'. This type of battery has a fairly high voltage across its terminals, in practice exceeding 100 volts, most often between 200 volts and 600 volts. Voltages exceeding 600 volts are also possible.

[0003] As a result, the voltage of this type of battery extends beyond the extra low voltage (ELV) range and it is necessary to provide precautions, there are indeed regulatory protection requirements, in particular with regard to possible contacts induced by a gesture of an operator either with bare hands or with the aid of a tool, or any other unwanted contact following a mechanical shock suffered.

[0004] In the context of this document, the voltage referred to as 'high voltage' is defined as a voltage greater than 50 volts.

[0005] Furthermore, it is established practice to protect the conductors of the electrical harness of a motor vehicle by means of fuses, including for circuits supporting high voltage type voltages.

[0006] Thus, a fuse box is generally provided in the part of the electrical network that supplies equipment connected to high voltage. The fuse box is functionally interposed between the battery and certain equipment that directly uses high voltage.

[0007] It is this fuse box that is of particular interest to the present invention. Maintenance operations on this fuse box are of particular interest here, including changing a fuse, measuring voltage using a test probe, or any other diagnostic or maintenance operation that may prove useful with regard to the fuse box.

[0008] The inventors sought to facilitate and streamline maintenance operations involving the fuse box.

[0009] To this end, the invention proposes a motor vehicle comprising a main floor, at least one electrical energy storage battery arranged under the main floor, a battery block crossmember delimiting the battery block and a fuse box mounted on the battery block crossmember, the fuse box comprising at least a box body and a cover together defining an internal volume of the fuse box, with at least one joint plane, at the point where the cover abuts the box body, the joint plane having a normal direction, perpendicular to said joint plane, the fuse box comprising at least fuses, arranged in the internal volume, the cover and the fuses being screwed in by means of screws having respective screw axes, said motor vehicle having a frame of reference in space comprising a longitudinal axis along a direction of movement of said motor vehicle, a lateral axis perpendicular to the longitudinal axis, and a vertical axis perpendicular to the longitudinal axis and to the lateral axis, the vertical axis being directed from bottom to top, and on the opposite side, directed from top to bottom by a downward vertical axis characterized in that the normal direction is oriented downwards, making an angle with the downward vertical of between 30 degrees and 70 degrees.

[0010] It is understood that the fuse box cover opens in a downward inclined direction, and optionally backwards, in the vehicle's spatial frame of reference.

[0011] Thanks to such an arrangement, the fuse box is directly accessible from underneath the vehicle. The vehicle can be lifted using a garage lift or, for example, a maintenance operator can slide under the vehicle or use a garage pit to access the fuse box area.

[0012] The cover can be unscrewed using conventional tools, in particular for example electrician's screwdrivers whose shaft is protected by a dielectric sheath.

[0013] Thanks to the geometry of the assembly, to work on the fuse box, it is not necessary to remove the fuse box body, i.e. the fuse box body remains in place.

[0014] It should also be noted that, since the fuse box is very close to the battery pack, the primary conductors connecting them are very short. As will be seen later, these conductors are also located in a well-protected mechanical area. This improves the overall protection of the conductors.

[0015] According to one embodiment, a free space of at least 10 cm is provided along the axis of each cover or fuse screw, measured from the joint plane. According to one option, the free space available along the axis of each cover and fuse screw is at least 12 cm, measured from the joint plane. According to another option, the free space available along the axis of certain cover screws and / or certain fuses is at least 15 cm, measured from the joint plane.

[0016] The available free space in front of the cover allows the cover to be removed without removing any other part of the vehicle (except for a possible underbody cover). Furthermore, the available free space provides access to the inside of the box. Fuses can be accessed without removing the fuse box from its mounting. An operator can reach inside the box with one hand. The available clearance in front of the mounting holes allows the use of a screwdriver, either directly in line with the holes or slightly offset, to tighten / loosen the cover fasteners and the fuse holders.

[0017] Thanks to the geometry of the assembly, for all electrical operations directly involving the fuse box, it is not necessary to remove the fuse box body.

[0018] In particular, thanks to the available free space, the technician or maintenance operator can reach in to grasp with their fingers an element located inside the fuse box.

[0019] According to one embodiment, the cross member is a rear cross member of a battery pack.

[0020] The fuse box is therefore located in this case at the rear of the main battery pack and The cover opens backward and downward. This design prevents gravel or other road debris from directly impacting the fuse box cover. It should be noted that a lower flange on the crossmember provides at least partial protection to the fuse box body from below.

[0021] According to one embodiment, the fuse box is interposed between the battery pack and a fuel tank of the vehicle.

[0022] Generally, a fuel tank is made of molded plastic. The shape of the tank may include, and this only opposite the fuse box, a recessed area intended to leave a desired free space in front of the cover.

[0023] According to one embodiment, the normal direction makes an angle with the downward vertical of between 55 degrees and 60 degrees.

[0024] The inventors found that this angular range represents an optimum for accessing and working inside the box without dismantling it, while occupying the smallest possible space along the longitudinal X direction. In other words, this spatial configuration is compact in the longitudinal direction, while providing the necessary access without having to dismantle the fuse box body.

[0025] According to one embodiment, the fuse box may have a general parallelepiped shape with a length denoted L1, a width denoted L2 and a height denoted H, the sum L1 + L2 + H being less than 50 cm, and preferably less than 40 cm.

[0026] According to one embodiment, the fuse box includes a priming connector, with a coupling direction parallel to the normal direction W0. Access for disconnecting the counterpart of this connector, a necessary preliminary step to be able to remove the cover, is also made possible by the orientation of the fuse box. and the free space in front of the lid at that point.

[0027] According to one embodiment, the arming connector is located in an upper portion of the fuse box arrangement in the vehicle. The arming connector is thus protected from possible direct mechanical damage such as projectiles of stones or gravel.

[0028] According to one embodiment, the lid is flat. It is an easy part to manufacture, and assembly and disassembly are simple and intuitive.

[0029] According to one embodiment, the connections at the ends of the conductors are screw connections, and the fuse box is without connectors. This results in a particularly high level of reliability for such an electrical distribution system. Furthermore, since it is not necessary to remove the box to access the internal components, there is no need for connectors to disconnect the fuse box. In addition, the space required by the fuse box is generally much smaller than that of the known art. Moreover, the weight of the proposed assembly is less than that of a fuse box equipped with connectors.

[0030] According to one embodiment, the fuse box comprises a back of the box body and fixing tabs made of the same material as the box body, each fixing tab comprising a flat with at least one hole, the flat being inclined relative to a back of the box body.

[0031] The back of the box body is parallel to the lid, in the case of a conventional box shape.

[0032] According to a non-limiting embodiment, the inclination between the plane of the flats and the back of the box body is at an angle [30, [30 being the complement to 90° of 00, 00 being the angle between the normal direction of the joint plane with respect to the downward vertical. [30 can be between 30 degrees and 35 degrees.

[0033] In particular, a peripheral lid closure seal may be provided, the seal being compressed between the lid and the can body when the can is normally closed. This is a simple and well-established solution. The peripheral seal may be an elastomer seal.

[0034] According to one embodiment, a sealing device is provided at the point of each wall penetration by the conductor(s), to ensure sealing not only at the level of the cover but also at the level of each of the conductor passages through the wall.

[0035] According to one embodiment, the sealing device is of the cable gland type and includes an O-ring. This is an effective solution for sealing around a cable passing through a wall. More specifically, the sealing device may include an O-ring arranged around the conductor and compressed by one or more pressurization element(s).

[0036] In one embodiment, all the wall penetrations are located on the same face of the box body. In other words, all the high-voltage conductor inlets / outlets are on the same side of the fuse box. In one embodiment, all the high-voltage inlets / outlets are directed upwards; they are kept away from the lower part of the fuse box, which could be subject to impact from ricocheting gravel. The conductors are housed in a narrow, concave space and are well protected from the external environment.

[0037] According to one embodiment, the fuse box can be fixed to a specific support providing the desired inclination. Thus, the fuse box can remain geometrically as simple as possible, and the specific support is an ad-hoc part incorporating the means for the inclined fixing.

[0038] According to one embodiment, the box body and the lid are made of aluminum.

[0039] According to one embodiment, the fuse box includes at least one positive busbar, a negative bus bar and fuses.

[0040] According to one embodiment, the fuse box includes a protective cover over the busbars and fuses to provide selective, small-sized access for the probe of an electrical measuring device. This configuration protects vehicle maintenance operators who may need to open the fuse box to replace a fuse or check for the presence or absence of voltage on the positive primary conductor or on one of the positive conductors. The protective cover prevents an operator or even an end customer from directly touching live components with their fingers.

[0041] The invention will be further detailed by describing non-limiting embodiments, and based on the accompanying figures illustrating variants of the invention, in which: [Fig. 1] is a schematic profile view representation of a motor vehicle with an electrical energy storage battery and a fuse box, according to the present invention, [Fig.2] is a schematic top-view representation of a motor vehicle with an electrical energy storage battery and a fuse box, according to the present invention, [Fig.3] is a schematic longitudinal cross-sectional representation of a portion of a vehicle in which the fuse box is located; [Fig.4] is a perspective view from below of a portion of a vehicle in which the fuse box is located; [Fig. 5] shows a top view, with the cover removed, of the fuse box according to the present invention, [Fig.6] is a view similar to [Fig.3], illustrating the operations for removing the cover and the arming connector, [Fig.7] is a view similar to [Fig.3], illustrating manual operations interacting with the internal volume of the fuse box, [Fig.8] is a schematic exploded perspective representation of an example of a fuse box further illustrating an internal protective mask; [Fig.9] is a partial cross-sectional view illustrating an example of a lid locking device at the location of a so-called arming connector; [Fig. 10] illustrates a variant embodiment without screws in the upper part of the lid.

[0042] In the various figures, the same reference numerals designate identical or similar elements. For the sake of clarity, some elements are not necessarily shown to scale.

[0043] We are interested in electric or hybrid motor vehicles. The motor vehicle 9 considered here may be a 100% electric vehicle (i.e., without an internal combustion engine) or a hybrid vehicle, for example, a plug-in hybrid vehicle. Such a vehicle is illustrated in Figures 1 and 2.

[0044] The motor vehicle 9 has a frame of reference in space comprising a longitudinal axis X along a direction of movement of said motor vehicle, a lateral axis Y perpendicular to the longitudinal axis X, and a vertical axis Z perpendicular to the longitudinal axis X and to the lateral axis Y, the vertical axis being directed from bottom to top (notation Z+, the downward vertical being noted Z-).

[0045] The front axle axis is designated YF, the rear axle axis is designated YR. The vehicle includes a fuse box 1 at the heart of the present invention; in the illustrated example, this fuse box is located in the vicinity of the rear axle in the longitudinal direction, slightly forward of YR, and in the middle part in the lateral direction Y.

[0046] The electric or hybrid vehicle 9 includes a battery 2 whose function is to store electrical energy. This type of battery has a storage capacity of between 20 kWh and 150 kWh. For a zero-emission, all-electric vehicle, the storage capacity is most often between 50 kWh and 120 kWh, which represents a considerable amount of energy. In this case, the battery 2 occupies a significant area under the vehicle floor, as illustrated in [Fig. 2].

[0047] This type of battery has a fairly high voltage across its terminals, in practice exceeding 100 volts, most often between 200 volts and 600 volts. A voltage exceeding 600 volts is also possible.

[0048] In [Fig. 3], battery 2 is shown schematically; the illustrated region is that of the rear end of the battery pack. It is immediately apparent that the fuse box is neither in a vertical nor a horizontal position; it is in an inclined position. as will be seen in detail below.

[0049] The respective positive and negative terminals of the battery are electrically connected to a primary junction box, not shown in the figures. The primary junction box is integrated into the battery pack and provides, in particular, general protection and forms the distribution head. The primary junction box includes, in particular, a general isolation relay that interrupts the voltage supply to downstream equipment, including the fuse box 1 of interest discussed below.

[0050] The fuse box 1 is electrically arranged downstream of the primary junction box and is supplied via two primary conductors 71 which enter the fuse box 1 (see [Fig. 5]). The cross-section of the primary conductors is typically between 15 mm² and 30 mm².

[0051] As shown in Figures 3, 5 and 8, the fuse box 1 comprises at least one box body 14 and a cover 15 which together define an internal volume of the fuse box. In the illustrated example, the cover 15 is assembled onto the box body 14 by means of screws 7.

[0052] The fuse box 1 comprises a positive busbar 30 and a negative busbar 40, arranged in the internal volume. Each busbar is a rigid conductive part, for example a plate, in particular a metal plate or otherwise called a bar, obtained by cutting from a blank with a thickness between 2 mm and 5 mm.

[0053] In the example illustrated in the figures, the fuse box 1 includes four fuses, marked Fl, F2, F3 and F4 respectively, but the number of fuses could be different.

[0054] The primary positive conductor connects the positive terminal of the battery (via the primary junction box) to the positive bus bar 30 by passing through a wall of the box body, and the primary negative conductor connects the negative terminal of the battery (via the primary junction box) to the negative bus bar 40 by passing through a wall of the box body.

[0055] The proposed arrangement comprises four pairs of output conductors 72, extending from the interior volume to an exterior area of ​​the fuse box by passing through a wall of the box body. Each pair of conductors comprises a negative conductor connected to the negative busbar and a positive conductor supplied by one of the fuses. The cross-sectional area of ​​the output conductors is between 8 mm² and 16 mm².

[0056] It should be noted that in the proposed configuration, there is no clip / tab type connection. Indeed, fuse box 1 has no connectors; the conductors pass continuously through the wall of the box body.

[0057] The connections at the ends of the conductors are screw connections. To make a screw connection, one can use a bolt / nut pair, or a welded nut and a screw that engages in this welded nut, or even a stud. welded thread onto which a nut is engaged by screwing it.

[0058] As illustrated in the figures, the primary conductors are screwed directly onto each of the busbars. For the output conductors, for example for the first pair, the fuse Fl is connected by a screw connection 81 to the positive busbar. The other end of the fuse is connected by a bolted connection 82 to the terminal of the first positive conductor 11.

[0059] As known per se, the cable ends are stripped and a flat lug with a hole is crimped onto this stripped end. The crimps are marked 83 in [Fig.5].

[0060] In the system promoted here, a cover locking system is provided using a so-called arming connector (this function is also called 'interlock' cover), which has the general function of interrupting the power supply to the fuse box as soon as said cover 15 is removed from the box.

[0061] For this purpose, an electrical connector is provided with a female part 19 and a male part 18 permanently attached to the housing body. In the illustrated example, it is a two-pin connector whose male part consists of a shunt. The female part carries two conductors 68 functionally connected to a controller (not shown in the figures) which controls a power switch; e.g., an isolation relay, in the primary junction box. This power switch interrupts the power supply to the primary conductors.

[0062] When the female part is coupled to the male part, the two conductors are short-circuited by the shunt, the power switch is closed, this is the normal situation, the power supply is armed.

[0063] When the female part is disconnected from the male part, the two conductors are no longer short-circuited by the shunt, and the power switch is then switched to the open state, in order to isolate the fuse box from the battery voltage. The power supply is then deactivated.

[0064] As illustrated in [Fig.9], the body of the female connector 19 has a size greater than the dimension of the hole 35 through which the male connector 18 passes.

[0065] Thus, this connector 19 must first be disconnected before the cover can be removed. In other words, the female connector of the harness must be physically disconnected so that the cover 15 surrounding the male connector 18 can be substantially moved away from the housing.

[0066] It is noted that the mating axis of the female plug 19 on the male connector 18, marked Wa, is parallel to the axis W0, which will be discussed below.

[0067] The point at which the cover 15 abuts the box body 14 defines a parting plane denoted PJ. The parting plane PJ has a normal direction denoted W0. Therefore, W0 is perpendicular to the parting plane PJ.

[0068] It is noted that it is not excluded that there are several offset partial joint planes but there is nevertheless at least one joint plane PJ whose perpendicular W0 is of interest here.

[0069] The back 14d of the box body extends in a UV plane, U being a direction parallel to the length and V being a direction parallel to the width as illustrated in [Fig.5].

[0070] The fuse box 1 has a general parallelepiped shape with a length denoted L1, a width denoted L2 and a height denoted H, the sum L1+ L2+ H being less than 50 cm, and preferably less than 40 cm.

[0071] The length L1 can be between 15 cm and 40 cm. The width L2 can be between 5 cm and 12 cm. The height H can be between 5 cm and 10 cm.

[0072] The lid 15 is flat. It may be a cut and drilled plate. The box body and the lid are preferably made of aluminum.

[0073] As illustrated in [Fig. 3], the normal direction W0 is oriented downwards. The normal direction W0 makes an angle with the downward vertical, denoted 00. 00 is between 30 degrees and 70 degrees.

[0074] According to an advantageous embodiment, 00 is between 55 degrees and 60 degrees. According to a particular, non-limiting embodiment, 00 is chosen at 57 degrees.

[0075] Expressed in other words, the direction V of the width of the base of the box deviates at an angle

[30] with respect to the upward vertical Z+. It is noted that, in a parallelepiped box configuration,

[30] is the complement to 90° of 00.

[0076] As shown in [Fig. 6], a maintenance operator can use screwdrivers to unscrew the cover fixing screws 7. A short screwdriver 91 and standard screwdrivers 92 are shown. A power drill can also be used, optionally with a universal joint.

[0077] It is noted that the screw axes of the cover screws 7 and the fuse fixing screws, generically designated by Wi (W1, W2, W3, W4, W5, W6, Wa, etc., cf. [Fig.6]), are all parallel to W0.

[0078] According to the example illustrated in the figures, in particular [Fig.8], the cover 15 is screwed on by means of nine fixing screws 7, but of course this number could be different.

[0079] Once the cover 15 is removed, a maintenance operator can use a test probe 93 to contact a downstream portion of a fuse in order to measure the voltage, i.e. the absence or presence of voltage at that location.

[0080] As seen in [Fig.7], a maintenance operator can reach his hand into the free space and grasp an item inside the fuse box, e.g. a fuse, to remove it or to install a new one.

[0081] The proposed tilt is clever because, if the case had been flat with 00=0 then The space it would occupy along the X-axis would be greater, and it could also be more easily damaged by objects striking the vehicle's underbody. Furthermore, the weapon connector, necessarily protruding from the side of the cover, would end up protruding downwards into the vehicle's underbody area, which is undesirable.

[0082] The proposed inclination is ingenious because if the housing had been on its edge, i.e., with [30=0], then a very large space would have to be provided in the X direction to allow access for tools to unscrew the cover screws without removing the housing body. The proposed angular range is therefore an advantageous compromise in terms of mechanical integration and access for maintenance operations, without removing the housing body.

[0083] The cables / conductors 60 that carry the high voltage enter and exit through the top of the fuse box. At each point where a conductor passes through the wall of the box body, a sealing system 6 based on a cable gland is provided.

[0084] The female connector 19 of the arming connector is coupled to wires 68 which run to the primary junction box. The mating direction Wa is parallel to the normal direction W0.

[0085] As can be seen in Figures 3, 4, 6 and 7, the battery is delimited at the rear by a cross member 4, referred to as the rear battery block cross member; this cross member can also be called a longitudinal member. This cross member can be part of a frame forming the structure enclosing the battery block.

[0086] This cross member is formed as a profile with the following cross-section: a vertical web 40, an upper flange 41, and lower flanges 43, 44.

[0087] It is noted that the fuse box is protected downwards in part by one of the lower wings 44.

[0088] The fuse box is fixed to the crossmember 4, by fixing tabs 24.

[0089] The mounting tabs 24, 24a can be made of the same material as the box body, as illustrated in Figures 5 and 8. Each mounting tab includes a flat with one or two holes. A mounting tab is provided at each end of the box body along the U-shaped length direction.

[0090] According to this preferred configuration, the fuse box is fixed directly to the rear crossmember 4 of the battery.

[0091] In an alternative embodiment, a specific support piece 23 can be provided, or the fixing lugs can be one or two specific pieces allowing the desired inclined position to be achieved.

[0092] In the case of a hybrid vehicle, the fuse box 1 may be interposed between the battery pack 2 and a fuel tank 80 of the vehicle. A particular shape of the tank may be provided to ensure the desired available space at the back of the fuse box cover.

[0093] A peripheral seal 12 for closing the lid is provided between the box body and the lid. The peripheral seal 12 extends continuously around the perimeter of the box body. The peripheral seal 12 may, for example, be made of an elastomeric polymer. The seal is compressed between the lid 15 and the box body 14 when the box is normally closed.

[0094] It is noted, in light of [Fig.9], that the screws 7 are arranged outside the contour of the peripheral sealing gasket 12.

[0095] All wall penetrations are arranged on the same face 140 of the box body 14. In other words, all the high-voltage conductor inlets / outlets are on the same side of the fuse box, here towards the top.

[0096] According to an alternative embodiment schematically illustrated in [Fig. 10], the upper part of the cover may be without fixing screws. Instead, a system for inserting fingers 95 into lugs 96 is provided. In the illustrated example, two fingers 95 are each inserted into a lug 96 by complementary shape, thus forming a pseudo-hinge area with axis A6.

[0097] After rotating the cover around the axis A6, it can be placed down by releasing the fingers 95 from the ears 96 (reference 15' in [Fig. 10]).

[0098] This principle involves rotating the lid both for opening and closing relative to the hinge area, which includes the fingers and tabs. Consequently, there are no screws to tighten or loosen on the upper edge 15a of the lid, and the available space in the upper part of the assembly can be slightly reduced. In the illustrated example, there are five screws 7 that pressurize the sealing gasket. The closing movement of the lid also pressurizes the gasket at the hinge area.

[0099] As apparent in [Fig.8], the fuse box 1 may include a protective mask 17 covering the bus bars and fuses to provide selective and small access for a test probe of an electrical measuring device.

[0100] More specifically, the mask 17 covers the entire front surface of the housing above the fuses, except for certain holes 170 with diameters between 4 and 6 millimeters. These holes 170 allow access to the screw heads with a probe but do not allow the insertion of a finger.

[0101] Wherefore, one can comply with an IP2X type access restriction requirement in the internal volume.

[0102] It is noted that if a fuse is not used according to the vehicle configuration, therefore respective conductors absent, the sealing device is replaced by a simple plug which allows the unused hole(s) to be hermetically sealed.

Claims

Claims

1. Motor vehicle (9) comprising a main floor (3), at least one electrical energy storage battery (2) arranged under the main floor, a battery pack crossmember delimiting the battery pack and a fuse box (1) mounted on the battery pack crossmember, the fuse box comprising at least one box body (14) and a cover (15) together delimiting an interior volume of the fuse box, with at least one joint plane (PJ), at the location of which the cover abuts the box body, the joint plane having a normal direction (WO), perpendicular to said joint plane, the fuse box comprising at least fuses, arranged in the interior volume, the cover and the fuses being screwed by means of screws having respective screw axes (WO, W1, W2, W3, W4, W5, W6),said motor vehicle having a reference point in space comprising a longitudinal axis (X) following a direction of movement of said motor vehicle, a lateral axis (Y) perpendicular to the longitudinal axis (X), and a vertical axis (Z) perpendicular to the longitudinal axis (X) and to the lateral axis (Y), the vertical axis being directed from bottom to top, and opposite, directed from top to bottom a descending vertical (Z-), characterized in that the normal direction (WO) is oriented downwards, making an angle (00) with the descending vertical (Z-) of between 30 degrees and 70 degrees.,

2. Vehicle according to claim 1, characterized in that there is provided, in the axis of each screw (WO, W1, W2, W3, W4, W5, W6) of the cover or fuse, a free space available of at least 10 cm from the joint plane.

3. Vehicle according to one of claims 1 to 2, characterized in that the cross member is a rear cross member of a battery pack.

4. Vehicle according to one of claims 1 to 3, characterized in that the fuse box (1) is interposed between the battery pack (2) and a fuel tank (80) of the vehicle.

5. Vehicle according to one of claims 1 to 4, characterized in that the normal direction (W0) makes an angle (00) with the descending vertical of between 55 degrees and 60 degrees.

6. Vehicle according to one of claims 1 to 5, characterized in that the fuse box has a parallelepiped shape with a length noted L1, a width noted L2 and a height noted H, the sum L1 + L2 + H being less than 50 cm.

7. Vehicle according to one of claims 1 to 6, characterized in that the fuse box comprises an arming connector (18, 19), with a coupling direction (Wa) parallel to the normal direction (W0).

8. Vehicle according to one of claims 1 to 7, characterized in that the cover (15) is of flat shape.

9. Vehicle according to one of claims 1 to 8, characterized in that the connections at the ends of the conductors are screw connections.

10. Vehicle according to one of claims 1 to 9, characterized in that the fuse box (1) comprises a box body back (14d) and fixing lugs (24, 24a) made in one piece with the box body, each fixing lug comprising a flat with at least one hole, the flat being inclined relative to the box body back.

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